Hi, Omar
Always good to welcome another Evo owner aboard.
You've spotted the Evo's Achilles heel with the suspension but, as you've already noted, there is plenty of advice on that subject here. Have a look at these threads, which you might find useful.
http://www.ukmonster.co.uk/monster/s...ad.php?t=52208
http://www.ukmonster.co.uk/monster/s...ad.php?t=51883
http://www.ukmonster.co.uk/monster/s...ad.php?t=51391
Sorting the rear is quite easy as there are lots of replacement shocks out there to suit all budgets. The forks need more work, either respringing and revalving or something like an Andreani cartridge kit.
http://www.ukmonster.co.uk/monster/s...ad.php?t=58335
If you're on a budget, you could just try changing the springs for both the rear shock and forks. They're all progressive and will benefit from linear rate springs tailored to your weight.
http://www.ukmonster.co.uk/monster/s...ad.php?t=56541
http://www.ukmonster.co.uk/monster/s...7&postcount=32
Keep us informed of any mods you make and let's see some pictures!